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Discussion Starter · #1 ·
Put a Towing Hitch on it and wiring Harness (picture 11850) That i bought from local automobile shop. But the lights on the trailer will not come on? All fuses are good. First picture is the one that's on it now but Should it be the 2nd picture that i should of used? Going Nuts ,Thanks
 

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Discussion Starter · #3 ·
Got them working. How ? Don't know they just started working when i haul the trailer for the first time, Wouldn't come on when just parked? Strange
 

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Usually Confused
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So long as you had power at the socket pins, grounding is most often the problem. Make sure the ground on the trailer is making good metal contact - they often rust over.

I can't tell if the harness you bought has both a 4-pin and multi-pin (6 or 7) sockets. If not, adaptors are cheap.
 

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Naildriver
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Don't count on the ball making the grounding connection. White wire from harness of vehicle must mate to a solid ground from the trailer.
 
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